you cant pour from an empty cup

Twine El Ocaso 10 oz Hand Blown Tumblers, Set of 2 Recycled Mexican Glassware for Cocktails and Beverages, Wedding Gifts, Purple to Yellow Gradient

Hello Kitty® and Mimmy 3D Icon Short Drinking Glasses - 13.5 oz - Set of 2

Crystal Kiddush Cup with Clear Gemstones within the Stem and Coordinating Tray

Viski Paragon Tumbler 12oz

Riedel 11.6 fl oz (Set of 2) O Wine Tumbler Water H2O Glasses

Meri Meri Reusable Pink Cat Cup (Pack of 1)

Silver Buffalo Disney Lilo & Stitch Color-Changing Plastic Cups | Set of 4

Duralex Gigogne 7.75 ounce Glass Mug, Set of 6

tag Island Collection Clear Glass Short Tumbler Drinkware with Black and Natural Cattail Straw and Paper Weave Sleeve 14 oz. Set 4

Storied Home Hand Blown Footed Drinking Glasses, 6 Ounces, 4 Assorted Colors

Storied Home Amber Glass Tumbler, Artisan Style, Set of 12

Handcrafted Moscow Mule Mugs, Set of 4

Home Collection Pack of 6, 16 oz Crystal Clear Plastic Drinking Glasses Disposable Party Cups

Minnie Mouse 3D Double Wall Mug, 13oz set of 2

Silver Buffalo Nickelodeon SpongeBob SquarePants Characters Can-Shaped Glass Cups | Set of 4

Tag Bubble Glass Footed All Purpose Navy Drinkware - 10oz Dishwasher Safe Drinking Glasses, 5.25" H x 3" L x 3" W

Seven20 Harry Potter Goblet of Fire Ceramic Cup | Holds 12 Ounces

Christmas Tree 14 Oz Novelty Sipper Cup

Crazy Dog Its Ok If You Disagree With Me I Cant Force You to Be Right Mug Funny Novelty Coffee Cup - 11oz

Libbey Modern Bar Essentials Tumbler Glasses, 14 ounce, Set of 6

Tag Fresh Pick 10oz Drinking Glasses - Dishwasher Safe Everyday Drinkware, Set of 4, 2.5" x 2.5" x 6"

Just Funky The Legend of Zelda Link 8oz Plastic Stadium Cup

Meri Meri Reusable Lion Cup (Pack of 1)